Tech Geek London-based Perlego, a digital subscription-based library of academic textbooks with about 850K titles, raises a $50M Series B led by Mediahuis VenturesBy Daniel HarrisonMarch 11, 20230 londonbased perlego 850k series mediahuis London-based Perlego, a digital subscription-based library of academic textbooks with about 850K titles, raises a…